Answer:
Value of the independent variable = 25
Step-by-step explanation:
y-intercept form of a straight line is represented by the equation,
y = mx + b
here y = dependent variable
m = slope
b = y intercept or vertical intercept
x = independent variable
In our question,
y-intercept 'b' = 150
slope of the line 'm' = 4
dependent variable y = 250
We will plug in these values in the equation of the line to get the value of the independent variable.
250 = 4x + 150
250 - 150 = 4x
x = 
x = 25
Therefore, value of the independent variable is 25.
PB = 12 (P=1, B=2) Numerical values are assigned to each letter and each letter takes on a single number.
In scientific notation: 8.74*10^-7
We know: the sum of measures of triangle angles is 180°.
Therefore we have the equation

Substitute
:

<h3>Answer: 180 - 7x</h3>